: : : A note:
: : : Adflicto is Latin for "I break".
: : : Adflictas is Latin for "You break".
: : : Both are present tense.
: : : But your phrase is a future tense command and I am not 100%
sure that adflictas is correct.
: : : I suggest you surf on over to http://www.latin.fsbusiness.co.uk/
to confirm my translation.

: : crus, cruris is neuter and hence the accusative singular
is just 'crus' not 'crurem'.
: : frango, ere is a better verb for 'break'.
: : You are quite right - the phrase is a command of sorts, but
the future is not used for this in Latin - you need either the imperative
voice or a present subjunctive.

: : so either - 'crus frangeas' (present subjunctive I think -
havent got a Primer with me)
: : or 'crus frange' (could be wrong there about imperative singular,
plural would be 'frangite' perhaps)

: "Crus" is neuter, 3rd declension and you are correct--the accusative
singular of "crus" is "crus"--very good.

: I do not agree with you on your choice of "frango".
: "Frango" suggests more of a shattering or a splintering or breaking
into little pieces as in ice or pottery.

: "Adflicto" has more of a "damage" or "break" nuance to it. "Adflicto"
could also mean "to injure" or "to weaken" which I think goes with
the expression more than "frango".

: There is a verb "effringo" which has a "break open" sense to
it as in making an omelette.